Compresses URLs using PeekURL.com. PeekURL always shows a preview of the full link, so your users don't have to worry about being sent to 'bad' sites. Youtube, MTV, and MySpace videos are played directly in the page.

PromotePictures is an effective social media promotion solution, made simple for online sellers. Post picture collages from your store to Facebook, Twitter, Instagram, Pinterest, Tumblr and Google+ to drive traffic and sales from all social platforms

A simple addon, which makes the current Youtube-Video full-window embend. Very good for a dual monitor setup, because you can have a Video in fullscreen and work on the other monitor. Additional you can press F11 to hide the menu-bar.